Method for assisted-GPS positioning based on ambiguity resolution in weak signal environment
An assisted-GPS positioning algorithm was proposed.Based on this algorithm, the receiver needn’t accomplish the bit synchronization, frame synchronization and navigation data demodulation, which were usually necessary for the conventional GPS receiver, it could implement the positioning solution onl...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2009-01-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/74650355/ |
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| author | SONG Cheng WANG Fei-xue ZHUANG Zhao-wen |
| author_facet | SONG Cheng WANG Fei-xue ZHUANG Zhao-wen |
| author_sort | SONG Cheng |
| collection | DOAJ |
| description | An assisted-GPS positioning algorithm was proposed.Based on this algorithm, the receiver needn’t accomplish the bit synchronization, frame synchronization and navigation data demodulation, which were usually necessary for the conventional GPS receiver, it could implement the positioning solution only by the measurement of pseudo-code phase and the assistance data（including ephemeris information and satellite clock corrections etc.）.Compared with the conventional GPS positioning algorithm, the proposed algorithm increases the ambiguity of the signal transmission time as an unknown parameter for the pseudorange equation.When the initial errors of approximate location and receiver’s clock bias were subjected to a constraint domain, the ambiguity of the signal transmission time could be eliminated.Then, the iteratively equation for this algorithm was derived, and the main steps were summarized.The simulation results show the validity of the algorithm. |
| format | Article |
| id | doaj-art-50c17d9c2f924d8db6fe576def19d6cd |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2009-01-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-50c17d9c2f924d8db6fe576def19d6cd2025-01-14T08:28:17ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2009-01-0130899474650355Method for assisted-GPS positioning based on ambiguity resolution in weak signal environmentSONG ChengWANG Fei-xueZHUANG Zhao-wenAn assisted-GPS positioning algorithm was proposed.Based on this algorithm, the receiver needn’t accomplish the bit synchronization, frame synchronization and navigation data demodulation, which were usually necessary for the conventional GPS receiver, it could implement the positioning solution only by the measurement of pseudo-code phase and the assistance data（including ephemeris information and satellite clock corrections etc.）.Compared with the conventional GPS positioning algorithm, the proposed algorithm increases the ambiguity of the signal transmission time as an unknown parameter for the pseudorange equation.When the initial errors of approximate location and receiver’s clock bias were subjected to a constraint domain, the ambiguity of the signal transmission time could be eliminated.Then, the iteratively equation for this algorithm was derived, and the main steps were summarized.The simulation results show the validity of the algorithm.http://www.joconline.com.cn/zh/article/74650355/assisted-GPSweak signalpositioning algorithmambiguity resolution |
| spellingShingle | SONG Cheng WANG Fei-xue ZHUANG Zhao-wen Method for assisted-GPS positioning based on ambiguity resolution in weak signal environment Tongxin xuebao assisted-GPS weak signal positioning algorithm ambiguity resolution |
| title | Method for assisted-GPS positioning based on ambiguity resolution in weak signal environment |
| title_full | Method for assisted-GPS positioning based on ambiguity resolution in weak signal environment |
| title_fullStr | Method for assisted-GPS positioning based on ambiguity resolution in weak signal environment |
| title_full_unstemmed | Method for assisted-GPS positioning based on ambiguity resolution in weak signal environment |
| title_short | Method for assisted-GPS positioning based on ambiguity resolution in weak signal environment |
| title_sort | method for assisted gps positioning based on ambiguity resolution in weak signal environment |
| topic | assisted-GPS weak signal positioning algorithm ambiguity resolution |
| url | http://www.joconline.com.cn/zh/article/74650355/ |
| work_keys_str_mv | AT songcheng methodforassistedgpspositioningbasedonambiguityresolutioninweaksignalenvironment AT wangfeixue methodforassistedgpspositioningbasedonambiguityresolutioninweaksignalenvironment AT zhuangzhaowen methodforassistedgpspositioningbasedonambiguityresolutioninweaksignalenvironment |